Standard Applet Methods
The first step in the creation of an applet is to make it a subclass of JApplet, a class that's part of the Swing package, javax.swing. An applet is treated as a visual window inside a web page, so JApplet is part of Swing alongside clickable buttons, scrollbars, and other components of a program's user interface.
JApplet is a subclass of Applet, a class in the java.applet package. Being part of this hierarchy enables the applets you write to use all the behavior and attributes they need to be run as part of a web page. Before you begin writing any other statements in your applets, they will be able to interact with a web browser, load and unload themselves, redraw their window in response to changes in the browser window, ...
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